sdg:namespacePrefixCopy as claim

sdg:namespacePrefix scopes an authorisation Rule's sdg:onTargetPattern to documents whose IRI starts with a given prefix. The bootstrap policy uses it to let sdg:Publisher publish under the sample namespace (http://example.org/docs/) — a Phase 1 convenience that exercises the write path without real identity.Copy as claim

The value is a plain string prefix matched against document IRIs, not a declared namespace document — it is a policy-side IRI-shape test, distinct from the lexicon's sdg:namespace membership predicate.Copy as claim